(Aero, 20-036WP) The role of extreme unsteady velocity fluctuations in helicopter landing on ships
Abstract
This proposal concerns the study of the ship air-wake over the landing helicopter dock (LHD) of frigate ships. The key component ofThis proposal concerns the study of the ship air-wake over the landing helicopter dock (LHD)of frigate ships. The key component of this research is incorporating the unsteady nature of sea-state boundary layers that extends to the ship motion itself. To our know this research is incorporating the unsteady nature ofsea-state boundary layers that extends to the ship motion itself. To our knowledge, the proposed study is the first to experimentally combine the integral parameters of ship motion, the wind and waves, and higledge, the proposedstudy is the first to experimentally combine the integral parameters of ship motion, the windand waves, and high Reynolds number turbulent flows. The proposed research involves experiments in the Extreme Air-Sea Interaction (EASI) facility ath Reynolds number turbulent flows.The proposed research involves experiments in the Extreme Air-Sea Interaction (EASI) facilityat the University of Melbourne, a large wave tank that can produce wind-wave conditions up to category 1 hurricane. The facility has l the University of Melbourne, a large wave tank that can produce wind-wave conditions upto category 1 hurricane. The facility has large sidewalls windows for viewing access, allowinghigh-speed, high-resolution Particle Image Velocimetry (PIV) techniques to be usarge sidewalls windows for viewing access, allowinghigh-speed, high-resolution Particle Image Velocimetry (PIV) techniques to be used. Two PIV planes will be investigated, namely, the streamwise-vertical plane and the horizontal plane parallel to the still watered. Two PIVplanes will be investigated, namely, the streamwise-vertical plane and the horizontal planeparallel to the still water surface. The investigators are experts in the use of this technique and have at their disposal state-of-the-art instrumentation for surface. The investigators are experts in the use of this technique andhave at their disposal state-of-the-art instrumentation for these experiments. Large databases of instantaneous velocity fields will be acquired using PIV above the landing deck of the NATOG these experiments. Large databasesof instantaneous velocity fields will be acquired using PIV above the landing deck of the NATOGeneric Destroyer model.eneric Destroyer model.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 31, 2020
- Source ID
- N629092012044
Entities
People
- Jason P Monty
Organizations
- Office of Naval Research
- United States Navy
- University of Melbourne